Transmission-housing construction



Feb. 10, 1931. H. E. ALTGELT TRANSMISSION HOUSING QCNS'I'EIUQTION IOriginal Filed March 12, 1928 1 Feb. 10, 1931. H. E. ALTGELTTRANSMISSION HOUSING CONS'IIPRIJC'I'ION s sheets-sheet 2 Original FiledMarch 12, 1928 fiwziwz vPatented Feb. 10, 1.931

v UNITED STATES PATENT OFFICE HERMAN E. AL'IGELT, OF SOUTH BEND,INDIANA, ASSIGNOR TO OLIVER FARM EQUIP- I KENT COMPANY, -A CORPORATIONOF DELAWARE TBANSHISSIONHOUSING CONSTBUCTION Original application filedMarch- 12, 1928, Serial No. 260,871. Divided and this application filedJune 10,

1929. Serial No. 369,570.

The present invention relates to a transmission assembly and housingconstruction for a motor vehicle and has particular reference to theefficient operation easy assembly and increased production andmanufacture of tractors for use in connection with and adaptation for avariety of agricultural attachments and implements.

One of the objects of the present invention is to provide a simple andeflicient arrangement of a transmission assembly and housing tion.

construction in which the number of operating parts thereof, are reducedto a minimum.

A further object of the invention is to provide a novel construction ofa transmission housing cover, which has assembled therein as a unit thesteering mechanism and post, the change speed lever and shifter forks,and the power take-off shaft for driving other implements orattachments.

These and other objects are accomplished by providing a construction andan arrangement of the various parts in the'manner hereinafter describedand particularly pointed out in the'appended claims.

Referring to the drawings, Fig. 1 is'a side elevational view showing theconstruction of my improved transmission housing and transmission coverunit secured thereto.

Fig. 2 is a longitudinal cross-sectional view view. of theconstructionshown in Fig. 1.

Fig. 3 is a side elevational view of the cover housing unit.

Fig. 4 is a top plan view of the cover housing unit shown in Fig. 3, and1 ig. 5 is an end elevational view of the same. I

-The present invention is a divisional aplication of my co-pendingapplication, Ser.

o.- 260,871, filed March 12, 1928 on a Transmission mechanism andhousing construc- In illustrating one form of my invention, I

vhave shown the same in connection with a tion -1 1, a relatively deepand narrow difierrelativel ential portion 12 having an extended and deeprear axle gear portion '13 formed integrally andsubstantially continuouswith the last named portion. Mounted in the. change speed transmissionhousing is a main transmission gear shaft 14 which is operatively drivenby the longitudinally extending main drive shaft 15 through the mediumof bevelled gears 16. Mounted parallel to the main transmission shaft 14is a supplemental transmission change speed gear shaft 17 which has'momted thereon, suitable transmission gears 18 which are adapated to beoperatively meshed with gears carried on the main shaft 14 in the mannerdescribed in my co-pending application. Operatively driven by one of thetransmission gears 18 is a differential gear 19 which is securedto atransverse shaft 20 within the differential housing 12.

This differential mechanism comprises the part of myabovementionedcopending appli-' cation and a more detailed description of the same isunnecessary for a complete description of the essential features of the,present invention. If a better understanding of this mechanism isrequired, reference to thecopendingflapplication may be had.

The essential feature of the present'in vention consists in theprovision of a novel construction of a transmission housing cover, whichhas assembled therein as a unit, the steering mechanism and post and itsassociated parts,-the change speed lever and shiftmg fork mechanism andits associated parts, and the ower take-off shaft mechanism and 1tsassociated parts for driving other implements which ma attached oroperatively connected with t e tractor. The primary object of combiningthese separate parts in one unit is for the purpose of permitting theunit to be assembled separately and then mounted on the housing of atransmission casing so as to expedite the assembly and thereby imcreasethe production and manufacture 0 the tractor.

This unit comprises a housing cover member or casing, generallyindicated by the ref erence character 25 which consists of a relativelylong, narrow rear portion 26 and a relatively wide front portion 27which is 10, in the manner illustrated in Figs. 1 and 2. Mountedlongitudinally of the transmission cover member 25 in suitable frontandrear anti-friction bearings 29 is a power 'take-oif shaft 30 which hassecured to its front end a spur gear 31 which meshes-with and isoperatively driven by a pinion 32 which in'turn, is secured adjacent therear end of the main drive shaft 15. The forward end of the housingcover member 25 isprovided with 'a' circular recess 33 in which theforward --anti-friction bearing 29 is mounted and the rearward end ofthe housing or cover member 25 is provided with a circular casing asshown at 34 in which the rear anti-friction bearing 29 is mounted. Thepower take-01f shaft 30 is provided with an annular flange "35 adjacentits forward end so as to engage the inner race of the anti-frictionbearing 29. The

shaft 30 is provided adjacent its rear end with a second annular flange36 which engages the inner race of the rear anti-friction bearing 29.These anti-friction bearings are held in position by a packing collar orplate 87 which is secured to the rear end of the. cover member 25 imanywell known manner. j The rear end of the, power take-oi! shaft isprovided with a plurality of grooves 38 so as to provide convenientmeans for connecting operating parts. .of implement attachments to bedriven by the ower take-ofi shaft. Formed adjacent the orward end of thehousing cover 25 is a dome-shaped base 39 having a centrally disposed arture 40 formed therein in whichismounts a steerin post; 41' and securedthereto by means of olts 42. Mounted in the 7 steering post is asteering shaft 43 Secured to the upper end of which .is the regular formof steering wheel 44. Secured tothe lower end of the steering shaft 43is a bevelled pinion 45 which meshes with a steering sector 46.

The sector 46 is secured to a shaft-47 which, nism, a steering mechanismmounted in said in turn, is journaled in bearing. barrels 48 formed inthe transmission housln -10. The shaft 47 is rovided with a dependingcrank (not showir which in turn, is connected b a connecting rod to .thefront steering whee s of the tractor (not shown). It" will, of course,beunderstood that the steering sector 46 is ositioned and mounted in thetransmission ousing 10 in the manner illustrated in Fig. 2 prior to thetime that the transmission cover is positioned in place for completelyassembling the transmission mechanism and the mechanism contained in thetransmission cover. Formed integrally with the transmission cover andpreferably on one side of the i dome-shaped portion 39 is a conicallyshaped portion 49 in which is mounted the conventional form of gearshaft lever 50, which, in turn, is p shifter fork 51 for s lifting thedifferent gears for changing the speed of the tractor. Secured by meansof bolts 52 on a flat portion 53 to the cover member 25 adjacent to andat the rearof the steering post 41 is a seat sup orting spring 54, onthe free and rearwar end of which is mounted an operators seat 55.

When all the parts which constitute the steering mechanism, the gearshifting mechanism and the power take-ofi'inechanism are properlyassembled in a transmission housing cover 25, the same is mounted as aunit on the transmission housinglO so as to cover the opening thereinand then secured by means of bolts 28 as clearly-shown in Figs. 1 and 2of the drawings. By this arrangement of assembling these arts 1nseparate units in whlch the units are later brought together to form thecomplete assembly of the rear portion of the tractor, I have provided asim 1e and eflicient arrangement of a transmission rovided with theusual assembly and housing construction in which the number ofseparating parts thereof, are redaced to a minimum so as to. increasethe rapid assembly and expedite the production and the manufacture oftractors, and at the same time, reduce the amount oflabor that isordinarily required in assembling these parts se aratel ile m the abovespecification, I, have described one embodiment which my invention Illma assumein practice, it will of course, be

un er'stood that thesame is-capable of modification and thatmodification may bemade without departing from thespirit'nndscopeolfl'mlymvention as expressed in the following c a1 s.

to secure by Letters Patent is cluding a shaftjournaled insaid'cover andbeing geared to said transmission" mecha- -1. The combination with'aitransnlission a hous ng, of ,a power-transmission me'cha-- nlsmmounted in saldhouslng, a "cover for said housing, a power take-offmechanism in- ;What I claim as my invention and (desirecover, and a gearshift mechanism mounted in said cover, including a lever andshiftingforks engageable with said transmission mechanism. 1 p Y 2. Thecombination of a power transmission housing having a relat1velyopenedupper portion, a power transmission mechanism mounted in said housing,of a cover unit secured to the open portion of said housin havinalongitudinall extending-power ing mechanism mounted in said cover, in-

ta e-ofi s aft journaled t erein and geared to said transmission,mechanism, a steering mechanismincludin a post and steering wheelmounted in said cover, and a gear shiftcluding a lever and shiftingforks operatlvely connected'with said transmission mechanism. 3. Thecombination of a transmission housing, having a transmission mechanismmounted therein, there being a relatively elongated opening in the upperportion of said housin a housing cover for-the o ing in said ousing,havin a relatively ong extending rear portion an a relatively wide frontportion, bearings mounted in the forward and rearward end of said cover,a power takeoff shaft journaled in said bearings, said shaft beinggeared to said owergtransmis- S1011 mechamsm for transmitting power toother implements, a steering mechamsm mounted in said cover, andagearfshifting mechamsm mounted in said cover, whereby said, covter maybe mounted on said housing as a um housing, of a power-transmissionmechanism mounted m said housing, a cover umt for saidtransmission'hous' having movable mechanism mounted therein andadaptedio be-o'peratively connected with the transmission mechanism insaid transmission housmg and a power take-of shaft mounted lon- 4gitudinally in said cover a gear on the shaft,

on said, transmission eratively related to their complementary parts'insaid transmission housing when said 00' cover is secured in position onsaid transmission housing.

.6, The combination of a transmission housing having transmissionmechanism mounted V therein, said housing having a'lon 'tudinallextending opening on the top si e thereo housing said cover areoperatively connected to their re,-

4. The combination with -a ton.

a cover unit havmg' ch e car speed elements mounted thereolz fi gowertake-01f shaft mounted in said cover, a gear on said shaft, said coverbeing secured to said-trans mission housing so as to cover the openingtherein whereby when said cover is secured in position on said housingthe operative parts therein, operatively engage the complementary partsin said transmission housgeared to said transmission mechanism and.

a'stee mechanism including a steering shaft an pinion mounted in saidcover, whereby w en said cover is secured to said pinion engages'saidsteering sector. w v

8. A transmission power take-01f unit comrising a cover secured to a.transmission ousing of a tractor, a power take-ofi' shaft T mounted insaid cover, a change eed gear lever mechanism mounted in sai cover, asteering mechanism mounted in said cover and an operators seat securedto said cover wherebythe operative parts carried by said 3 spectivecomplementary movable parts of i said transmission mechanism of saidhousing when said coveris secured to said housm o A power take-61f unitfor a transmission 0o mechamsm for a tractor comprising a cover, a powertake-01f shaft journaled in said cover having a car secured at theforward end. thereof an geared to the maindrive shaft 'of saidtransmission mechanism and extending longitudinally of and above saidtrans, mission mechanism.

10. The combination of a transmission housing having a main drive shaftand 'transmission mechanism mounted therein, a cover unitsecured'tosaidhousirfilha a steering part located substanti y in t e longitud nalcenter thereof, and a power take-01f shaft geared to said main driveshaft and extending longitudinally in the center of said cover belowsaid steering post whereby said cover and parts mounted thereinomay. beassembled as a unit on said transmission housing.

In testimony. whereof I have signed my name to this specification, onthis 25th day of May, A. 111929.,

. V 'E. ALTGELT.'

HIE

